Hello I'm Javier Durante from Argentina. I've been working as a software developer for the last 7 years. I've started to work with NodeJS 2 years ago. I have experience with ExpressJS, MongoDB and RabbitMQ (I've used it with Java, but it won't be a problem to use it from nodejs using the library that you provided in the description).
This is an easy project so I think I'm suitable for the job. Also because I will be able to help you with the production deploys and to explain everything you need to know about the project.
About the tomcat or nginx, you shouldn't need them, at least that you want to use nginx as the load balancer. In that case, I can help you with the nginx configuration, you only need the hostnames of every nodejs instance, and some entries in the nginx server configuration.
Looking forward to hearing from you.
Thanks in advance
Javier